高镍铬无限冷硬球墨铸铁轧辊工作层离心铸造过程数值模拟  

Numerical simulation of centrifugal casting process of high nickel-chromium infinitely chilled ductile iron roll working layer

作　　者：杨智强[1] 郭红星 强少光 吴锋帅 YANG Zhiqiang;GUO Hongxing;QIANG Shaoguang;WU Fengshuai(Electrical college,Kunming Vocational And Technical College of Industry,Anning 650302,Yunnan China;Yunnan KISC Heavy Equipment Manufacturing Group Co.,Ltd.,Anning 650302,Yunnan China)

机构地区：[1]昆明工业职业技术学院电气学院,云南安宁650302 [2]云南昆钢重型装备制造集团有限公司,云南安宁650302

出　　处：《中国铸造装备与技术》2024年第5期24-31,共8页China Foundry Machinery & Technology

基　　金：云南省教育厅科学研究基金项目(2023J1648)。

摘　　要：借助有限元模拟软件ProCAST对高镍铬无限冷硬球墨铸铁轧辊工作层离心铸造过程进行了分段建模,计算了铸件的温度场、流场。结果表明,铁液与离心铸型内壁接触后,受到自身重力、旋转铸型带来的离心力、摩擦力三个合力作用,以层状形式沿铸型内壁做圆周运动,沿着内壁同时向铸型两端运动,先到达离浇道距离较近的模具一端,沿轴向向另一端铺展。在有限元模拟辅助下生产出的高镍铬无限冷硬球墨铸铁离心复合轧辊,工作层为树枝状结晶组织,技术指标符合要求。With the help of finite element simulation software ProCAST,the centrifugal casting process of the working layer of high nickel-chromium infinitely chilled ductile iron rolls was modeled in sections,and the temperature field and flow field of the casting were calculated.The results show that after the molten iron comes into contact with the inner wall of the centrifugal mold,it moves in a circular motion along the inner wall of the mold in a layered form by the combined force of gravity,centrifugal force and friction brought by the rotating mold,and moves to both ends of the mold along the inner wall at the same time,first reaching one end of the mold close to the sprue,and spreading along the axial direction to the other end.The high nickel-chromium infinitely cooled ductile iron centrifugal composite roll produced with the assistance of finite element simulation has a dendritic crystal structure in the working layer,and the technical indicators meet the requirements.

关 键 词：高镍铬无限冷硬球墨铸铁轧辊 离心铸造 数值模拟 枝晶 

分 类 号：TG249.4[金属学及工艺—铸造]